Wheeled mine crane



Aug. 9, 1932- c. GoTTscHALK ET AL V 87906 WHEELED MTNE CRANE Filed May 15, 1929 5 Sheets-Sheet l mmlmul'lllllllllll? .fnllullllll I: 'n

, ".1" Y a w. Hummm 4 l' Aug. 9., '1932.

C. GOTTSCHALK ET AL WHEELED MINE CRANE Filed May 15, 1929 5 Sheets-Sheet 2 Aug. 9, 1932- c. GoTTscl-IALK -l-:T Al. v1,870,905

WHEELED MINE CRANE Filed May 15, 1929 3 Sheets-Sheet 3 Patented Aug. 9, 1932 narran STATES PArENr ort-ica CHARLES GOTTSCI-IALK AND DAVID T. BLAKEY, OF .EVANSVILLE INDIANA; SAID BLAKEY ASSIGNOR T SAID GrOT'l?SGHALCKV wHEEL'EnMINE CRANE y Application med May 15, 1929. semaine.- aeasse,

In coal mines where the coal is loaded into a mining car, the common practice is for a mine locomotive to pull the loaded cars out of the room and ontc a switch, uncO-uple them, L* couple to an empty car and carry it back into the room to the loading machine. rlhis operation consumes considerable time and results in added expense of operation.

The object of our invention is t0 provide `m an improved wheeled mine crane which will be adapted to pick up, and transfer toa parallel track in the room where mining is being carried on, an empty car and .thus make it ready for loading, the mine locomotive dropping back one car length, and continuing this operation until a complete trip is made up.

We also propose to provide a wheeled mine crane or underground crane, adapted for` general wrecking work in a mine, and for moving objects, and supporting timbers in the roof, when work of that character is required. y

The invention contemplates the provision of a main truck having wheels to run on the track, a turn-table carried by the truck, im-

proved means for turning the turn-table in one direction or the other, and novel crane arm and supporting levers therefor, as also novel means for raising and lowering the said 3o arm; together with incidental improvements, the construction and operation of which will appear more fully hereinafter.

In the accompanying drawings:

Figure 1 is a side elevation showing the crane in position for transfer of a mine car;

Fig. 2 is a plan view thereof, dotted lines representing the position of the crane arm and turn-table when the mine car has been swung over to the parallel track;

Fig. 3 is an elevation taken at the right hand end of Fig. 1; and

Fig. 4 is a detail plan view of the crane, certain parts being broken away. l The truck 1 is provided with wheels 2 to run on the usual rails.

Surmounting the truck is a turnetable 4 which has a central pivotal mounting 5 and is provided with a gear 6 with which meshes a pinion carried by a vertical shaft 8 which has a frictional bevel gear 9.

An electric motor 10 carried by the turn table 4, is connected by a belt 11 with a jackshaft 12,"said shaft having frictional bevel pinions 13, either of which may be engaged with the wheel 9 by operating the lever 14, 5'5 thereby to enable the turn-table to be turned in one direction or the other.

vSuitable rollers 15 carried by the truck 1, support theturn-table 4 to relieve its pivot 5 of strain'.l i

Theturn-table 4 carries our improved mine car .elevating crane which comprises a -double arm16 to which a crossrod 17 may be `connected and provided,` with chainsi18 to support an ordinary mine car which is vshown v at 19. Y

. The arm116 is suitably trussed to afford thev requisite strength and it is mounted forvertical movement in a plane parallel'to that of the turn-table 4, by arms or links 420 which 'fo are arranged'in pairs, andare connected to pivotal crossrods 21, 22 carried kby the arms 16. y 1

The arms'20 are connected to pivotal crossy y rods 23, 24 supported by suitable brackets 7'5 attached to the turn-table 4.

A parallel-rule arrangement is thus provid-v ed, enabling the arm 16 to be raised or lowered in parallelism to the plane of the turn-table 4. `There is a tubular support 25 mounted on, L80 or connected to, the turn-table 4 or to the front shaft or rod 23 andthis is adapted to receive a screw 26 which co-operates with the arm 16. p A worm wheel or gear 27 contained within 85 a case 28, has a screw-threaded bore engaged with the threads of the elevating and lowering screw 26. so that when the worm wheel 27 is turned in one direction, the screw `26will be raised and when said gear 27 is turned 90 in the opposite direction, said screw 26 `will be lowered, thereby raising or lowering` the arm 16. `The gear 27 is carried byv the tubular member 25. i A

A worm pinion 28 which is contained with- 95 in the case 28 and meshes with the gear 27, is driven fromV the shaft 12, when desired. The pinion 28 is carried by a shaft 29 which has a universal joint connection 30 with a two-section telescopicfsplined shaft 31, which in turn,has a universal joint connection 32 toa shaft 33.

The shaft 33 is mounted in suitable bearings 34 carried by the turn-table 4 and it is provided with a friction bevel gear 35. The gear 35 may be driven from shaft 12 Vby the friction pinions 36 carried by shaft 12 and subject to the control of lever 37. When one of saidpinions is engaged with the gear 35, the screw'26 is elevated and when the other of saidpinions is engaged with said` gear 35, the screw 26 is lowered.

A drum winch 38 may be suitably mounted on the turn-table 4 and driven by belt-39 from shaft 12. This enables a cable to be wound on the drum 38 for wrecking, or other purpose, as may be necessary. Y

The arms 20 are preferably provided with cross braces toaflord added strength, and it will be understood that the-arm 16- may be trussed or braced in any desiredmanner.

A Instead of using a single track, we propose to provide an additionalor parallel track 41 which may serve as the loading track. The hauling track is shown at 42.

An empty car, shown at v19, may be picked up by our crane, and the crane Vwill swing laterally byl revolving the'turn-table', to enable the empty mining car 16 to lbe placed onV the rails ofthe parallel track 41 `for loading purposes. This operation can be continued by theV shifting of the -crane on the rails 42,

one car length at a time, by the mine locomo tive. y

Our mine crane may be used in. any. ywork within .the mine, such as moving objects, wrecking work,- or, the support of mine timbers in the roof when work of that character is required.'

` yWhat we claim is:

1. In a wheeled mine crane, the combination with a truck, `of a crane arm, pairs of supporting arms pivotally connectedto said crane arm and to the truck, and, means for raising and loweringthe crane arm comprising a screw co-operatively related to the crane arm, an anchored wheel having a screwthreaded bore engaged with said screw, whereby turning of the wheel causes Vmovement-of the screw lthrough the wheel, and

means for rotating said wheel.

' 2; In aV wheeled mine crane, the combination with a truck, of a crane arm, pairs of sup-l porting arms pivotally connected to said Y crane arm and to the trucl{,a11 d means for raising and lowering lthe crane arm comprising a screw cooperatively related to the crane arm, an anchored worm wheel having a screw threaded bore engaged with the screw whereby turningof the wheel causes movementof the screw through the wheel, av worm pinion for driving said worm wheel, and means for tion with a truck, of power driven means carried by the truck, a jack-shaft driven by said power means, a crane arm mounted on said truck for raising and lowering, an elevating and lowering screw for the crane arm, an anchored gear having a screw-threaded bore engaged with said screw, a gear and pinion and an operating shaft connecting the jackshaft to the aforesaid anchored gear, whereby the anchored gear aforesaid may be turned so that the crane arm may be operated from the ack-shaft, and means for controlling the direction of revolution of the operating shaft whereby theV crane arm may be raised or lowered. y

4. In a vwheeled mine crane, the combination withl a truck, of a crane arm, parallel rocker arms mounting said crane arm on the truck adapting said arm to remain in substantialiy horizontal position at all times, an 1,v

elevating screw movable with the crane arm, gearf and pinion meansfor raisingor lowering said screw and which are carried by said screw, power means on the truck, and a telescopic shaft provided with universal joints, said shaft being adapted' for driving the aforesaidY gear and pinion means from the power means aforesaid.

Y V`In testimony whereof we afliX our signatures."

CHARLES GOTTSCHALK..

DAVID T. BLAKEY Vno controlling the direction of revolution of the worm pinion. Y

3. In a wheeled mine crane, the combina- 

